JD
James Doyle — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Fremont-County, Colorado
Our Model Tree links this James Doyle across the 1920, 1930 and 1940 US Censuses in Fremont-County, Colorado (XGBoost, ~Confirmed) — first a head (b.~1883), then head of a 3-person household.
Age 57
b. ~1883
Male
Head
Born: Colorado
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Fremont-County, Colorado |
| Surname | Doyle |
| Given Name | James J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Florence City |
| 1935 Residence (County) | Fremont |
| Additional Details | |
| Occupation | Janitor |
| Industry | Post Office |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 140 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Janitor |
| Township / Ward | Florence City |
| Est. Birth Year | ~1883 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| James Doyle | Head | — | 57 | ~1883 |
| James Doyle | Son | — | 18 | ~1922 |
| Emma Doyle | Spouse | — | 51 | ~1889 |
Census Appearances
1920
Fremont, Colorado
Head, age 36
Fremont, Colorado · implied b. ~1884 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Doyle |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Colorado |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Stationary Engineer |
| Industry | Oil Refinery |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Fremont, Colorado
Head, age 46
Fremont, Colorado · implied b. ~1884 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Doyle |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Colorado |
| Age at First Marriage | 30 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Pumper |
| Industry | Oil Refinery |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 1600 |
| Radio Set | R |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Fremont-County, Colorado
Head, age 57
Fremont-County, Colorado · implied b. ~1883 — 3 household members
| Surname | Doyle |
| Given Name | James J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Florence City |
| 1935 Residence (County) | Fremont |
| Occupation | Janitor |
| Industry | Post Office |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 140 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links James Doyle across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
James Doyle
Head · 1940 · age 57 · b. ~1883 · Colorado
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Fremont-County, Colorado
Open full size
1940 US Federal Census — Fremont-County, Colorado
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00463-00510)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edna C. Smith | 48 | Wife | Helper | Oklahoma |
| 42 | Karol W. Smith | 21 | son | Odd Jobs | Colorado |
| 43 | Clyde Smith | 19 | son | Chow Boy | Colorado |
| 44 | Morris J. Smith | 17 | daughter | — | Colorado |
| 45 | James T. Coulter | 55 | Head | Minister | Ohio |
| 46 | Paulina Coulter | 56 | Wife | — | Colorado |
| 47 | Theo J. Coulter | 25 | daughter | Nurse | Colorado |
| 48 | Robert R. Coulter | 19 | son | — | Colorado |
| 49 | Leland M. Coulter | 17 | son | — | Colorado |
| 51 | James J. Doyle THIS PERSON | 57 | Head | Janitor | Colorado |
| 52 | Emma M. Doyle | 51 | Wife | — | Iowa |
| 53 | James J. Doyle | 18 | son | — | Colorado |
| 54 | Vernon T. Ipson | 28 | Head | Cobbler | Kansas |
| 55 | Lillian B. Ipson | 29 | Wife | — | Colorado |
| 56 | Hutchenson Norma J. Ipson | 5 | Niece | — | Colorado |
| 57 | Grace Moore | 60 | Head | — | Texas |
| 58 | William O. Brown | 28 | Head | Printer | Florida |
| 59 | Wilhelmine Brown | 26 | Wife | — | Connecticut |
| 60 | Margaret Brown | 4 | daughter | — | Colorado |
| 61 | Lucile Howell | 44 | Head | Laundress | Kansas |
| 62 | Willard Howell | 20 | son | Trucker | Colorado |
| 63 | Marla Howell | 12 | daughter | — | Colorado |
| 64 | Alfred E. Dell | 78 | father | — | Missouri |
| 65 | Fred Bernal | 43 | Head | Laborer | New Mexico |
| 66 | Abenezia Bernal | 20 | Wife | — | New Mexico |
| 67 | Stella Bernal | 16 | daughter | — | New Mexico |
| 68 | Alphonso Bernal | 15 | son | — | Colorado |
| 69 | Benny Bernal | 10 | son | — | Colorado |
| 70 | Myra E. Ferguson | 68 | Head | — | Kansas |
| 71 | Dolly D. Ferguson | 37 | daughter | Teacher | Colorado |
| 72 | Harold Ferguson | 24 | son | Carpenter | Colorado |
| 73 | Jessie Ludwig | 66 | Head | Librarian | Colorado |
| 74 | Frances Durand | 77 | Sister | — | Missouri |
| 75 | John Diver | 79 | Head | — | England |
| 76 | Mae Diver | 63 | Wife | — | Missouri |
| 77 | Joe Nardin | 45 | Head | Miner | Austria |
| 78 | Clementine Nardin | 46 | Wife | — | Austria |
| 79 | Luther J. Randel | 50 | Head | Miner | Kansas |
| 80 | May Randel | 36 | Wife | — | Colorado |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)